All work should be submitted in its original form. ... (b) If v=— show that z=a^~^\ and find from either equation 1 ' " x-a' p—a' H the value of a in order that x='i when y=2. Also, for this ... Thence find the length of an edge of such a box weighing 18$ pounds, if the thickness is 1 inch and the weight 1 ounce to the cubic inch.